Concrete pavement and floor



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LOUIS, MISSOURI.

CONCRETE PAVEENT a moon.

SPEGIIFICATION forming part of Letters Fatent NO. 401,539, dated April 16, 18289. Application filed November 24, 1888. Serial No. 291,773. (No specimens.)

.To all whom it may concern:

Be it known that LP EsToN M. BRUNER, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in ConcretePat'ements and Floors, of which the following is a full, clear, and exact description;

My invention relates to a facing or temporary wearing-surface of a concrete pavement or floor; and my invention consists in features of novelty disclosed by the claim.

In the construct-ion of concrete pavements or sidewalks and floors put in place in a plastic condition it often becomes difiicult to protect the work while it is becoming solidified or hardened. The usual way is to fence off or throw scaffolding over it until hard enough to bear the weight and wear of travel. This is a great inconvenience and annoyance where there is much travel. In order to overcome I this difficulty and to accomplish other desirable endsI propose to place on the finished surface some quick-setting cement of any suitable kind. This will hardendn a few minutes and bear the Weight and wear. of traflic for a few days; afterward it will wear off or may be peeled off, for at the end of that time the concrete of which the pavement or floor is formed will have become sufficiently hardened. r

The material that I prefer to use for its quick-setting but any other quick-setting material or mixture may be used. on should be such properties is plaster-of-paris;

The method of putting it that the material will not i mix in with and combine with the pavement or floor, but only adhere and sufficiently to hold or remain in its place for the required time and then leave the pavement in a smooth and undisfigured condition. My preferred manner of applying it is to sprinkle it over the surface in a powdered condition. or to make a very thin paste of it and spread it upon the surface. When sprinkled on in a powdered condition, it takes up moisture from the fresh pavement and immediately hardens.

I do not lay claim to the use of a quick-set- PRESTON M. BRUNER.

In presence of- SAML. KNIGHT, Envv. S. KNIGHT.

\ ting cement where the same isput on as an 

